Question

a semicircular recess in a church, arched, or with a domed roof. originally reserved for the seat of the emperor in roman basilicas, to be replaced by the altar in christianity.

Answer 1

Answer:Apse

Explanation: In architecture, an apse (plural apses; from Latin absis 'arch, vault' from Ancient Greek ἀψίς apsis 'arch'; sometimes written apsis, plural apsides) is a semicircular recess covered with a hemispherical vault or semi-dome, also known as an exedra.